Is DraftSight so slow when panning on large DWG files?

I have noticed that panning on a large DWG file is pretty slow. I've tested 2D Editor and it is much faster than DraftSight. This is quite strange. I believed DS was actually a better option for old 2D Editor users. Is anyone noticing the same? Is there any setting I should turn on/off in DraftSight to get better performance when managing large DWG?

 

thanks

 

Gualtiero